code: def register_handler(handler):
      """
      Install application-specific WMF image handler.
  
      :param handler: Handler object.
      """
      global _handler
      _handler = handler
  
file_path: catboost/contrib/python/Pillow/py2/PIL/WmfImagePlugin.py
imports: from __future__ import print_function
  from .None import Image, ImageFile
  from ._binary import i16le, i32le, si16le, si32le
  from ._util import py3
label_desc: Use image node_id 1 for calling a global function with example usage: register_handler(handler) without return types